Hollow sound-conveying tube for talking-machines.



mlwmas. PATENTED-NOV. 29, 1904.v

' J. JETTBR.

HOLLOW SOUND CONVEYING TUBE FOR TALKING MACHINES.

, APPLICATION rum) APR. 28, 1904.

HO MODEL.

INVEII T08 .ii xms Sofifir v I TTDRNEY.

UNirED STATES;

JULIUS J ETTER, OF CAMDEN, NEW JERSEY, ASSIGNOR TO VICTOR TALK- PatentedNovember 2'9, 1904.

: PATENT OFFICE.

ING MACHINE COMPANY, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HOLLOW SOUND-CONVEYING TUBE FOR TALKING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 7'7 6,183, datedNovember 29, 1904.

Application filed April 28, 1904:. Serial No. 2051 79- (N QdBL) T0 onwhom it may concern:

Be it known that I, JULIUS J ETTER, a citizen of the United States, anda resident of the city of Camden, State of New Jersey, have inventedcertain new and useful Improvements in Hollow Sound-Conveying Tubes forTalking-Ma chines, of which the following is a full, clear, andcompletedisclosure.

The object of this form of my invention is to provide such aconstruction in hollow sound-- conveying tubes for connecting thesound-box with the amplifying-horn of talking-machines,

structure or parts are greatly simplified and 1 reduced in number.

prises a hollow sound-conveying tube or arm, which carries at oneendthereof the usual sound-box and which is pivoted at its other end toa hollow fixed connection,-said connection also being adapted to supportthe amplifying-horn.

For a full, clear, and detailed description of this form of my inventionreference may be had to the following specification and to theaccompanying drawings, forminga part thereof,

in which Figure 1 is a side elevation of a talking-machine embodyingthis form of my invention. Figs. 2, 3, 4L, and 5 are views illustratingdetails of construction, certain parts being shown in section.

Referring to the drawings, the numeral 1 indicates the usual casing,which contains the spring-motor or other driving mechanism, which isconnected by a vertical spindle with the usual turn-table 2. Attached tothe motor-casing is a laterally-extending arm or bracket 3, which has atits outerend a vertical opening or socket, which carries a cylindricalrod or post 4, said rod or post 4 being retained adjustably within saidopening by means of a thumb-screw 5. Upon the upper end of said rod 1 Iplace an elbow connection 6, which is Briefly, this form of my inventioncornin the form of acasting, having a lug or boss 7 7 at its lowerportion, said lug or boss having a socket into which the post 4 isadapted to be retained, there beinga driving fit between said parts. Theset-screw 8 is also provided for holding the said post 4 within the boss7.

. The upper end of the elbow-piece 6 is adapted to telescope with thesmaller end of the amplifying-horn proper, as indicated at 9. Thehorizontal end of the elbow-piece 6 has a somewhat enlarged cylindricalopening 10 therein, which is adapted to receive one end of thesound-conveying tube 11. Said sound-conveying tube 11 is provided at itsend within said opening 10 with a flange 12, having a surface which is apart of a sphere. Said flange is also provided with two segmentaltransverse grooves, as indicated at 13, within which are placedsegmental shoes or keys 14. At points corresponding to opposite ends ofa vertical. diameter of the opening 10 in theelbow 6 I providepivot-screws 15, which pass through said elbow and the tapering ends ofwhich engage recesses in the shoes or keys 14c. Said screws are held inposition by suitable set-nuts 16. Within each groove 13 I may prefer toplace pins or stops 19, which limit the vertical downward movement ofthe tube 11, so that when the sound-box is not in operation upon therecord the arm will not drop beyond a cer- :be seen that I have providedan extremely simple and efiicient joint by which the soundconductingtube may be connected with the amplifying-horn, all the parts being madeof cast or drawn pieces without requiring delisate machine-work, andtherefore being very easily assembled and interchangeable. The

passages forming communication between the sound-box and theamplifying-horn are unobstructed by any pins or bars, and all partsbeing gradually curved give no hindrance to the movement of thesound-waves as they pass through said passages. Moving parts which givea vertical and horizontal play to the arm are reduced to the smallestsize, and therefore produce a minimum amount of friction.

Having thus described my invention, it will be evident that changes maybe made in the form and arrangement ofparts without departing from thespirit and scope of my invention; but,

What I claim, and desire to protect by Letters Patent of the UnitedStates, is

1. In a talking-machine, the combination with a sound-conveying tube, afixed connecting-elbow adapted to telescope therewith, vertical pivotscarried by said elbow, and means carried by said tube for engaging saidpivots, and for allowing a vertical movement of said tube.

. 2. In a talking-machine, the combination with a sound-conveying tube,a fixed elbow adapted to telescope therewith, vertical pivots carried byone end of said elbow, a flange located upon the end of said tube, andhaving transverse grooves therein, shoes carried in said grooves, andadapted to be engaged by said pivots.

3. In a talking-machine, the combination with a sound-conveying tu be, aspherical flange carried at one end thereof having transverse groovestherein, slidable shoes located in said grooves, a fixed elbow, one endof which is adapted to telescope with the flange portion of said tube,and vertical pivots carried by said elbow adapted to engage said shoes.

4. In a talking-machine, the combination with asound-conveying tube, afixed elbow, a support for said elbow comprising an arm having avertical opening therein, a pin adjustably held in said opening, saidpin being adapted to engage a socket in said elbow, and a pair ofvertical pivots connecting said tube, and elbow including slidable meansto give a vertical movement to said tube, said slidable means beingengaged by said pivots.

5. In a talking-machine, the combination with a sound-conveying tube, afixed connecting part adapted to telescope therewith, pivots carried byone of said parts, and shoes longitudinally slidable in relation to saidparts, and which engage said pivots for allowing a vertical andhorizontal movement of said tube.

6. In a talking-machine, the combination with a sound-conveying tube, afixed connecting part adapted to telescope therewith, one of said partshaving longitudinal grooves, shoes carried in said grooves, and pivotscarried by the other of said parts and engaging said shoes.

In witness whereof I have hereunto set my hand this th day of April, A.D. 1904.

JULIUS J ETTER.

Witnesses:

LEWIS H. VAN DUSEN, EDW. W. VAILL, J r.

